package cn.tedu.jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Scanner;

public class JDBCLogin {
    public static void main(String[] args) {
        try (Connection connection = DBUtil.getConnection()) {
            Statement statement = connection.createStatement();
            Scanner scanner = new Scanner(System.in);
            while (true) {
                System.out.println("请输入用户名：");
                String username = scanner.nextLine();
                System.out.println("请输入密码：");
                String password = scanner.nextLine();
                String sql = "SELECT username,password,nickname FROM userinfo";
                ResultSet resultSet = statement.executeQuery(sql);
                while (resultSet.next()) {
                    if (resultSet.getString("username").equals(username) && resultSet.getString("password").equals(password)) {
                        System.out.println("登录成功,欢迎您" + resultSet.getString("nickname"));
                        return;
                    }
                }
                System.out.println("用户名或密码错误！");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}
